| Jeffrey Boeyink | Alliant Energy Corporation | Undecided | GA89 |
| Taylor McDonald | Alliant Energy Corporation | Undecided | GA89 |
| Ted Stopulos | Alliant Energy Corporation | Undecided | GA89 |
| Brad Epperly | American Clean Power Association | Undecided | GA89 |
| Dustin Miller | American Clean Power Association | Undecided | GA89 |
| Jon Murphy | American Planning Association Iowa Chapter | Undecided | GA89 |
| Tom Cope | American Planning Association Iowa Chapter | Undecided | GA89 |
| Barbra Solberg | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Kate Walton | City of Bettendorf | Undecided | GA89 |
| Madeleine Bradley | City of Bettendorf | Undecided | GA89 |
| Matt Eide | City of Bettendorf | Undecided | GA89 |
| Jon Murphy | City of Cedar Falls | Undecided | GA89 |
| Tom Cope | City of Cedar Falls | Undecided | GA89 |
| Gary Grant | City of Cedar Rapids | Undecided | GA89 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA89 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA89 |
| Jon Murphy | City of Coralville | Undecided | GA89 |
| Tom Cope | City of Coralville | Undecided | GA89 |
| Doug Struyk | City of Waukee | Undecided | GA89 |
| Jennifer Dorman | City of Waukee | Undecided | GA89 |
| Jim Carney | City of Waukee | Undecided | GA89 |
| Drew Kamp | Council Bluffs Chamber of Commerce | Undecided | GA89 |
| Clara Wulfsen | Department of Revenue | Undecided | GA89 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Undecided | GA89 |
| Andrea Woodard | Greater Des Moines Partnership | Undecided | GA89 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA89 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA89 |
| Andy Conlin | Invenergy | Undecided | GA89 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| John Davis | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Steffi Lee | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Emily Piper | Iowa Association of School Boards | Supporting | GA89 |
| Phil Jeneary | Iowa Association of School Boards | Supporting | GA89 |
| Brad Epperly | Iowa Business Energy Coalition (IBEC) | Undecided | GA89 |
| Dustin Miller | Iowa Business Energy Coalition (IBEC) | Undecided | GA89 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA89 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA89 |
| Jake Ketzner | Iowa Conservative Energy Forum | Undecided | GA89 |
| Nick Boeyink | Iowa Conservative Energy Forum | Undecided | GA89 |
| Eric St Clair | Iowa Department of Education | Undecided | GA89 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA89 |
| Chelsea Hoye | Iowa Environmental Council | Undecided | GA89 |
| Emilee Harris-Puricelli | Iowa Environmental Council | Undecided | GA89 |
| Kerri Johannsen | Iowa Environmental Council | Undecided | GA89 |
| Michael Schmidt | Iowa Environmental Council | Undecided | GA89 |
| Threase Harms | Iowa Environmental Council | Undecided | GA89 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA89 |
| Robert Palmer | Iowa League of Cities | Undecided | GA89 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Opposing | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Opposing | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Opposing | GA89 |
| William Peterson | Iowa State Association of Counties | Opposing | GA89 |
| Jamie Cashman | Iowa State Association of County Supervisors | Opposing | GA89 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Opposing | GA89 |
| Lucas Beenken | Iowa State Association of County Supervisors | Opposing | GA89 |
| William Peterson | Iowa State Association of County Supervisors | Opposing | GA89 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA89 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA89 |
| Jim Carney | Iowa State Bar Association | Undecided | GA89 |
| Tom Sands | Iowa Taxpayers Association | Supporting | GA89 |
| Maison Bleam | Iowa Utilities Board | Undecided | GA89 |
| Jake Highfill | Iowans for Tax Relief | Supporting | GA89 |
| Victoria Sinclair | Iowans for Tax Relief | Supporting | GA89 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA89 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA89 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA89 |
| David Adelman | Metropolitan Coalition | Undecided | GA89 |
| Frank Chiodo | Metropolitan Coalition | Undecided | GA89 |
| Lillie Brady | Metropolitan Coalition | Undecided | GA89 |
| Matt Hinch | Metropolitan Coalition | Undecided | GA89 |
| Sara Allen | Metropolitan Coalition | Undecided | GA89 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA89 |
| Kate Walton | Missouri River Energy Services | Undecided | GA89 |
| Madeleine Bradley | Missouri River Energy Services | Undecided | GA89 |
| Matt Eide | Missouri River Energy Services | Undecided | GA89 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Nathaniel Arnold | Professional Educators of Iowa | Undecided | GA89 |
| Dave Daughton | Rural School Advocates of Iowa | Supporting | GA89 |
| Margaret Buckton | Rural School Advocates of Iowa | Supporting | GA89 |
| David Wilkerson | School Administrators of Iowa | Supporting | GA89 |
| Gary Grant | Urban County Coalition | Undecided | GA89 |
| Larry Murphy | Urban County Coalition | Undecided | GA89 |
| Meghan Malloy | Urban County Coalition | Undecided | GA89 |
| Margaret Buckton | Urban Education Network of Iowa | Supporting | GA89 |